Instantaneous electric-socket attachment.



P. STROUP.

IN$TANTANEOUS ELECTRIC SOCKET ATTACHMENT.

APPLTCATTON FILED NOV. 22, I915 1.2 1 8,035. latented Jan. 16, 191?.

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ammc ntw wumw I T m ge /m P. STROUP. v INSTANTANEOUS ELECTRIC SOCKETATTACHMENT. 7 APPLIQA HDN FILED NOV- 2% l 9l5- 1,213,035. V PatentedJan. 16,1917.

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- l i n" PHILIP STROUP, OF CLEVELAND, OHIO.

INSTANTANEOUS ELECTRIC-SOCKET ATTACHMENT.

Specification of Letters Patent.

Patented Jan. 16, 1917.

Application filed November 22, 1915. Serial No. 62,871.

Y '0 all whom it may concern:

, Be it known that I, Piiimr S'rnour, a citizen ofthe United States ofAmerica, residing at Cleveland, in the county of Guyahoga and State ofOhio, have invented new and useful Improvements in InstantaneousElectric- Socket Attachments, of which the following is a specification.

This invention relates to electric plugs and has for its primary objectto provide a device of this character havingthe inherent properties ofbeing readily attached and detached from a socket in a very short interval of time.

An object of the invention is to provide a simple constructionandat thesame time insure a good electrical contact.

Another object of the invention is the simple manner of arrangingtheelements so as to prevent short circuits orflash overs between theparts connected at the opposite conductors of the circuit.

Other objects of the invention will appear hereinafter in the novelcombination of elements as pointed out in the appended gclaim. y

In lthe drawings Figure 1 is a vertical section through an electricsocket showing my invention applied thereto, the'invention being shownin side elevation. Fig. 2 is an enlarged vertical section through theplug.

Fig. 3is a side elevation looking at right angles to Fig.2. 'Fig. 4: isaperspective view 'of theblocks of which the plug is composed. Figs. 5,13and 7 are cross sectiona-l views through the plug. Fig. 8 is a verticalsection through a modified form of my invention Fig. 9 is a horizontalsection therethroughf Referring to the drawings, the numerals .1 and 2designate the side supportin blocks 'madelof insulating material, one 0which being provided with the laterally extending portion 3 havingpassages 4 through which pass bolts 5 that have threaded engagement withthe opposite side' blocks. The other side block in this particularinstance, block 1, is provided with lugs 6 provided with{threaded-passages 7 for a purpose herein- 'after described. Rigidlyformed with the side block member 1 is a bushing 8 and the latter iffound advantageous can be detach-- ably held between the blocks 1 and 2in any suitable manner such as by bolts. This 5, bushing 8 is providedwith a bore 9 having its axis extending vertically In the preferred formof my invention, this bore 9 receives a bolt 10 having its end 11resting upon the upper end of the bushin and a threaded end 12 receivingthe usu'a nut 13 between which is frictionally held 'an'end ofthecurrent wire 14.. Passing through the lugs (3 thatis to say, through-thepassages 7,

' are bolts 15 that d'etachably engage the adacent lower ends of a pairof opposite leaf springs 16 and 17, each having its upper end integrallyformed with or detachably connected to a contact 18. These contacts 18are of arcuate shape in cross section so asto conform to the curvatureof the threaded bore of the socket 19 to increase the amount of contactbetween the contact members and threaded bore of the socket member. thecontact members corrugated so that the ridge thereof will fit betweenthe threads of the socket 1 9. For moving the contact toward the bushingfor readily allowing the plug to'be attached to the socket, I rigidlysecure to the leaf springs push buttons 20 of insulating material thatslide in the spaces formed between the blocks -'1 and 2. From thisarrangement it will be seen that when pressure is exerted upon thebuttons, the leaf springs will be forced toward each other for carryingthe contact members toward the bushing. After the device is forced asuitable distance within the socket, pressure is relieved from thebutton with the result that the resiliency of the leaf springs forcesthe contact members into tight engagement with the threaded bore of t esocket and at the same time prevents movement of the end portionof thebolt 10 away from the contact portion 21 of the socket. The remaining"current wire of the circuit is rigidly secured to'one of the leafsprings, but -I wish it to be understood that the same can be readilyattached to both leaf springs and depends entirely upon'the amountof'current to be fed to the branch circuit.

In the modified form of my invention I I show i have shown a more simpleconstruction which can be manufactured at much less expense. In thisform of my invention I have provided an elongated insulated-bushing 22having an enlarged lower end portion 23. The bushing 22 is providedwitha longitudinally extending bore 24 through which passes one of thecurrent wires 25 that has its extremity extended beyond the upper endofthe bushing and flattened so as to rest thereupon. Thus it will be seenthatI have provided an'enlarged portion for engagingthe contact buttonof the socket Passing aroundlthe enlarged end portion 23 of the bushingis a middle portion of a substantially U-shaped spring 26 thatterminates in laterally extendingend portions 27 that'form contacts thatengage the threaded bore of the socket. This U-shaped spring is rigidlysecured to the bushing by means of bolts, one of which is'firmlyconnected with the remaining current wire 26.

O bviously, various changes could be made in certain parts of theapparatus by one skilled in the art without departing from the spiritand scope of the invention and for this reason I desire not to belimited to the precise arrangement and construction of parts] asdisclosed.

What I claim and'desire to haw tected by Letters Patent of the t IStates is:---

In a device of the character describ I two part block bolted'together,one-tot parts being formed with a pair of spa 1 lugs for spacing theparts, leaf springs c having one end secured to ,a lug and its oi; endformed into a contact and a button.

cured to each spring and working betwez said parts.

In testimony whereof I affix my signatm in presence of two witnesses.

PHILIP STRUUR Witnesses:

DoN MILLS, ETH'EL ALDEN Smotm

